The 3640 was the slowest/cheapest '040 board ever made in the history of the world according to the interview with Dave Haynie on this site:
http://www.amiga.org/modules/sections/index.php?op=viewarticle&artid=15I've had a few 4000 040/25's in the past, and I can say that for most operations it wasn't that noticably faster than my A1200's with 030/50's in em. (Except in certain functions.. it really did sorta depend on what you were doing.)
So how come I never hear people talking about Fblit when they are talking about performance improvement? That used to be one of my fave programs for getting my AGA Amigas to fly. (iBrowse especially flew and scrolled web pages in 256 colors nicely with Fblit.)
Regards,
Goji